Adiabatic and multimode interference couplers on silicon-on-insulator

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    90 Citations (Scopus)

    Abstract

    Adiabatic and multimode interference (MMI) 3-dB couplers based on silicon-on-insulator rib waveguides were fabricated and measured. For testing purposes, pairs of identical couplers were cascaded to form Mach-Zehnder interferometers. The adiabatic couplers showed excess on-chip loss of ~0.5 dB, extinction ratio (ER) of 15-20 dB, and a wide spectral range. The MMI couplers processed on the same wafer showed similar loss per coupler, higher ER, and limited spectral characteristics.
    Original languageEnglish
    Pages (from-to)2287-2289
    JournalIEEE Photonics Technology Letters
    Volume18
    Issue number21
    DOIs
    Publication statusPublished - 2006
    MoE publication typeA1 Journal article-refereed

    Keywords

    • Integrated optics
    • optical device fabrication
    • optical planar waveguide couplers
    • silicon-on-insulator (SOI) technology

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